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Mechanical analysis of functionally graded plates based on the input data of metallographic diagrams

时间：0
分类：TH11[机械工程—机械设计及理论]
作者机构：[1]School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
相关基金：Supported by the National Natural Science Foundation of China （Grant No. 10432030）
相关项目：功能梯度材料与结构的关键力学问题研究

关键词：金相学简图, 机械分析, 极板, 机械学, metallographic diagrams, functionally graded material, net structure, microelement method, scale-span analysis

中文摘要：

为材料微观结构和成员宏反应的规模跨度分析的一个微型元件方法被建议了。而不是为传统的机械分析的材料参数输入，方法基于 metallographic 图信息的输入。以便表示材料微观结构，这个方法在计算，和转移前在平常的有限元素安排集中的微型元件进经由相容性条件的一个一样的有限元素的每个微型元件的自由的节点度。这个方法能从材料微观结构认识到直接转变分析到成员的宏回答，当自由的计算元素和度等于那些时平常女性。基于图由材料 metallographic 图建议了的复杂微观结构，机能上地分级的盘子的力学回答被计算，宏机械的变量的 3-D 分布和微观结构上的相同压力线趋势被给。

英文摘要：

A microelement method for scale-span analysis of material microstructure and member macro response has been proposed. Instead of material parameter input for traditional mechanical analysis, the method is based on the input of metallographic diagram information. In order to express the material microstructure, this method arranges concentrated microelements in ordinary finite element before calculation, and transfers the node degrees of freedom of each microelement into the ones of the same finite element via compatibility conditions. This method can realize direct transition analysis from material microstructure to macro responses of members, while computation elements and degrees of freedom are equal to those of ordinary FEM. Based on the complicated microstructure diagrams proposed by material metallographic diagram, the mechanics responses of functionally graded plates are calculated and 3-D distributions of macro-mechanical variables and identical stress lines tendency on microstructure are given.